Step 1: Understanding the Concept
The question asks to identify a Rabi crop from the given options. In India, cropping seasons are divided into two main types:
Kharif crops: Sown at the beginning of the monsoon season (June-July) and harvested after the monsoon (September-October). They are monsoon crops.
Rabi crops: Sown in the winter (October-December) and harvested in the spring (April-June). They are winter crops.
Step 2: Classifying the Crops
(A) Paddy (Rice): This is a classic Kharif crop, as it requires large amounts of water and is grown during the monsoon.
(B) Groundnut: This is also a Kharif crop.
(C) Cotton: This is another major Kharif crop.
(D) Wheat: This is the most important Rabi crop in India. It is sown in winter and harvested in spring.
Step 3: Final Answer
Paddy, groundnut, and cotton are Kharif crops. Wheat is a Rabi crop. Therefore, option (D) is the correct answer.